Memory Mirroring
The memory mirroring feature writes the same data into two groups of DIMMs corresponding with
each other between memory branches (mirror set) to provide data redundancy.
Group #1
Group #2
Data1
Data1
Data2
Data2
Data3
Data3
Data4
Data4
NOTE:
physical capacity.
The memory mirroring feature can be used under the following conditions:
Install memory devices on four memory sockets configuring a mirror set.
All the installed memory devices should have the same capacity.
Run SETUP (see Chapter 4), change parameters appropriately in the [Mirror] menu
selected as shown below, save the settings and exit from SETUP.
[Advanced] → [Memory Configuration] → [Memory RAS Feature] → [Mirror]
Install memory devices in the following order:
Groups 1 and 2 → Groups 3 and 4 → Groups 5 and 6
The following mirroring cannot be configured:
Memory mirroring between different mirror sets
Memory mirroring within a specific memory branch
Pair of
mirroring
Pair of
mirroring
Pair of
mirroring
The operating system only recognizes a half of the total
Upgrading Your Server 9-31
Mother board
Memory controller
Branch #0
Group #1
Group #3
Group #5
Branch #1
Group #2
Group #4
Group #6